It's a 2003 Z71 Tahoe with a compounded 4bt backed by a built 4l80e. Its been a long term project of mine. Has been a driver for the last few years but isn't done. Needs a different rear end... head studs and more fuel.
Lots of fab work and time... but also a lot of fun.
Anyways.. as far as spray in, I could go that route but can do the polyiso cheaper... and its all flat square surfaces so fitment should be nice and snug other then the air gap I want to leave. The corners and such were already spray foamed by the manufacturer so all I have to do is the flat surfaces of the walls and ceiling.