The starting point

Not great, but not terrible.... so far

Sandblasting revealed rust in the usual places

Rear cab corner rot

Firewall has been through a lot 

Must have backed into something

Corner rot gone and gas filler filled in

New rocker panels

New cowl

New lower door skins, outside and inside

Not all the frame key dimensions are on the web, so we will have to make changes as we go.  Frame is designed to handle a lot more torque than the stock one

Time to start cutting frame rails 

Crossmembers

My son did all the TIG welding

Frame rails done

Frame is flat on the waffle table, square, and upside down

The frame is all TIG welded, and the welds look very good

Locating the crossmember for the C4 front suspension

Rebuilding the C4 control arms

Adding cab mounts to the frame

Cab on the frame

Front suspension loosely set in place

Cab is on the frame

Adjustable rear cab mounts

Bottom of back window is horizontal

B pillar is vertical

My son is teaching me how to MIG weld so I can do some of this myself

Looks decent with the C5 vette wheels

Front fender bracket moved from old cowl to new one

Had to reposition the front crossmembre

Rear floor pan cut out. 

Rear floor pan plug welded in place

Firewall, toeboard and front floors cut out.

Forming the firewall.

Firewall test fit.

Front floor test fit, with new firewall.

Dash before and after filling holes

New firewall with brake pedal and toeboards

Test fit with hydroboost

Splined front sway bar mounting works, but not ideal

Transmission crossmember, frame mounts changed later

The R2.8 is ready to install

Test fit front sheet metal, don't have all the dimensions

New adapter to use a GM tranny with the R2.8

Original R2.8 transmission interface

Adapter installed

Setting the engine mounts

Engine 'happy' place is 4" further back than planned

Engine sits entirely behind axle centerline, just like a Corvette

Lost some foot room

Decided to use 14ga for firewall, the 18ga was too flimsy

Starting to make things permanent

Doghouse, front floors and tranny tunnel fitted

All plug welded into place

Filling the holes

With cab off for weld out, finally put tranny crossmember in