Michael, I don't have to remove the tank. I could go from underneath, there is an 18" wide removable aluminum plate that is the width of the beam under the car. But, my EFI pump, filters, Webasto pump, and horns are all under there. And don't forget the master cylinders for brakes and clutch and my custom-made swaybar(in front of the beam).
The tank is right over the beam and column. Easy access without getting under the car. I hope.
Stan, that is my thinking. With a Spyder, the packaging is tight. I hadn't thought of a workaround for the front suspension yet. Rear IRS though, that I actually bought the steel for. I'll need IRS bearing housings and stub axles, and eight heim joints and four lateral "tierods".
As for the front, a 2" narrowed beam gives me room for my 4-piston brakes(track increase of 3/4" per side). The spring rate feels good, whatever leaves Greg used are OK. The NOS Koni adjustable oil shocks make the ride supple but firm.
I'm really hoping the on-center feel and overall rack precision finish this off, as this is as far as I'm willing to go in this car.