68 rag camaro wrapped around an 04 GTO/LS1 man

[GB68]

Stripped down my 68 camaro convertible all the way after patching the quarters, floor and trunk years back(bought the running car for $1600 in 1990). This past year have replaced both quarters, fixed inside quarters, rear top deck structure, prepped the rest. Frame rails, shock mounts all very good.
Got a salvage complete wrecked 04 GTO-LS1/6-speed this past spring($1700 total thru IAA), stripped most of it and removed the dash, all wiring, cut out the floor and began retrofitting into the 68. Course the later dashes are deeper but similar widths between pillars and by measurements the GTO firewall protrudes in about 8-9 inches from stock firewall. Less cabin space and will end up with no rear floor space but the big uplift is using the massive AC/heat unit, entire dash, column, pedals, both masters and all electrics incorporating modern options.
Away goes the old kick panel doors and window cranks won't be visible so motors are a must.



Using the GTO floor will have to be lower as the floor to window base is 1-2 " taller, floor width is wider by about 8 inches so hacking/channeling is necessary to utilize the GTO seats(minus the headrests).

Referencing is based off of the 68 windshield-the GTO upper dash to floor is about 1-2 inches taller in GTO so the floor out of the GTO will be 'sunk' a bit without sacrificing much sub frame height/body. The wiper motor and arms are higher than the cowl panel so I may ‘tilt’ the cowl panel and beveling the sides to clear the wipers creating a hideaway windshield base. Shape the GTO curved portion to meet into the original cowl surface so the grill header will sit. Will blend the donor dash and cowl areas(proper supports even utilizing the galvanized tunnel brackets from the GTO) and will give me 'space' between the original firewall and deepened firewall for the cable cruise, CB/fuse block(both were mounted on the GTO pass wheel well) and ample space for the brake and clutch masters. See how can incorporate the side vents as the GTO plumbed into upper door fronts and blasted out of doors. More engine clearance and radiator/fan/condenser space utilizing most from the GTO(recovery tank, washer bottle). Engine/trans will sit