OrionRaphael,
Apples and Oranges aside, You got a last year production incomplete G Van!
I think you scored one very clean, extremely low mile G30 Incomplete Unit that was ordered and delivered to Damon, who then manufactured your G Van Cab and Chassis, into a nice Class C Cabover MH. The G Cab/Chassis Unit is covered in the G Factory Service Manual,
Clean little Shorty MH Raphael. Nice find! IMO would be hard to duplicate again in the wild.
Happy Vanning
P.S. Not a big fan of Tubular headers in a Motorhome. Pull any doghouse, in any van, drive around the block a few times, gets pretty warm eh?
I think the cherry red glow on headers I've seen after pulling a load is alarming to say the least. Never saw that underhood on my 327 C 10. IDK. It;s just me, but I'd run stock manifolds full plug heat shields into a dual crossover 2.5, or a single 3 inch exhaust., Lose the stock Cats. The dual exhaust from a diesel would bolt right up. More Pics and keep us posted Bro!