Here are some crude 3D models of my project to date. The tubes are all shown as round but I intend using mostly square, also most of the bays are not triangulated to keep the sketches simple. The dash bulkhead is not in it's final location until I get the seat buck done. Some of this design is similar to the Westlake XI mostly because that car a;so uses Sprite suspension. The front suspension is quite a challenge because it uses trunions instead of ball joints and requires the A arms to swing in parallel. To solve this problem I have canted the four upright tubes back at 5° to give me 5° of camber. No adjustment
The Sprite rear axle is also a problem as the rear track is only 44.75" Getting two bottoms and a drive shaft into that space isn't going to happen so I have rearranged the rear end so the trailing arms are offset to the inside. This results in an offset load which I hope won't be too bad. This also pushes the seats forward of the tires. I won't get this solved until I build the seat buck.
I plan on building up front and rear subframes and then the seat buck. That way I can adjust the WB a little. It is amazing the Sprite had only 80". No wonder they are easy to spin.