Hello all, I have a classic truck that's a Frankenstein. It's a 55 chevy but it's cab was swapped with a 58 GMC and is titled as a 58 GMC. It's great looking truck I plan to have it show quality by the summer. However, the cab is unmistakably a GMC with the square instrument panel. The rest of the truck has the look of a 55 chevrolet.  Should, I keep it all GMC after all I can't change the dash without doing major cutting or changing the cab again or leave the bowties and make it look like chevy (even if dash is different)
It's definately a custom truck, power steering, tilt, disc brakes etc.
What's your advice GMC or Chevy?  

Berg:
Hello all, I have a classic truck that's a Frankenstein. It's a 55 chevy but it's cab was swapped with a 58 GMC and is titled as a 58 GMC. It's great looking truck I plan to have it show quality by the summer. However, the cab is unmistakably a GMC with the square instrument panel. The rest of the truck has the look of a 55 chevrolet.  Should, I keep it all GMC after all I can't change the dash without doing major cutting or changing the cab again or leave the bowties and make it look like chevy (even if dash is different)
It's definately a custom truck, power steering, tilt, disc brakes etc.
What's your advice GMC or Chevy?

Well, You would not be building a "Franfenstein" in my opinion!  The GMC dash is my preferrred dash.  I also have a Chevy Chassis, hood, fenders and grille(1957) and like you I have a 1958 GMC Cab!  When I got the cab I was going to convert it over to a Chevy.  I even had cut the dash out of another Chevy cab (that I scrapped) and saved the dash for a transplant.  But I never did it!  My license plate reads "HEINZ57"  Because it is a "mixed breed". LOL!

I learned to like the GMC cabs for the size of the instrument section.  I am going to install a billet aluminum dash insert that I had made for it (and am now selling copies of)  The polished Billet dash is a one-piece unit, that mounts from the rear (no exposed fasteners) it has two 3-1/2 inch and 4 2-1/16 openings for any of the aftermarket gauges like VDO, Autometer, Stewart Warner Dolphine,etc.  Would you like one?

I also have parts for the hard to find GMC if you wanted to convert the sheetmetal and grille over to a GMC.  Plus I sell every kind of part you'll need to rebuild and restore your 55-59 trucks!  
Rubber, electrical, mechanical, glass, sheet metal, doors, hoods, fenders, beds bed wood stainless bolts, tailgates etc, etc.

Email me: son.follower@yahoo.com  

Why build a truck like EVERYBODY else has??

Dare to be different and you will love the interest everyone shows in your truck.... Only the "purist" (who have thier own rights and opinions) would say it was wrong!  Them guys need a life!

LOL

My 2-cents worth....  

The idea of a billet dash insert for the GMC dash sounds really cool. I like it a lot, too bad I don't have a truck of that vintage, or you could sign me up for one right now. That guy shouldn't worry about having a GMC dash in his Chevy, he ought to be just d##ned glad he ain't got a toyota or some other foreign piece of ***