Jerry the intent was always to use a Astro shell for the body and tin the inside,so a dog house was never a issue,but driver's seat location given the set back of the engine was.Max set back is 18" because of the door openings and driver's site line out the driver's window.

The body mods are major.There are a fold in Astro's body line and planned is a cut 360 degrees around the body creating a new rocker panel along with a 6" top chop to get it to set down on the frame with a 48" ground to roof line measurement.The w/b on the shorter early Astros and the extended versions are the same.I just prefer the early shorties.

The engine for this isn't nothing major.Sure would be happy to just get into the high tens naturally(no nitrous)and still keep it easy drivable van on the street with the hope of the four link/coil over and the wt savings helping in that effort.