Hey guys thx for the responses. I cant get to the truck til next weekend. It's all locked away at my buddys house and he's out of town. I will get the dimensions as soon as I can get it out of the current frame. You might be able to look up dimensions on-line for an 80-81 Blazer.
dwcsr, Ive seen your work and it looks great! You say 6 yrs on the 2 yr project and it would take me 12-15 yrs to achieve the same quality you've shown in your pics...(hydroboost...That is cool)