After taking a better look at the size of the car and the design of the suspension and brakes, I think a 750 is too much.
I found some interesting links; some are a bit harsh but still interesting to read.
http://www.mysubaru360.com/manuals_and_ ... ril_69.pdfhttps://www.youtube.com/watch?v=FulblPS ... SIf0FtIAFQhttp://www.thetruthaboutcars.com/2012/0 ... -engineer/Do you want a car that looks like a subbie 360 or an “improved” 360?
Since the engine and transaxle are integral, so a differential, transmission, and engine are required.
Since the axles locate the wheels laterally and the car is a unibody, some framing and suspension will be required.
Since the wheels are 10 inch split rims and drum brakes, I’d be very concerned about having more than 45 hp.
Off the shelf automotive irs is too wide without custom axles.
If you want an “improved” 360, I’d look into using the driveline from a 2wd atv with around 500cc, used. Most atv dealers have plenty of used atvs as repo for parts they can sell. Use the entire irs (make sure it has a differential) including spindles, brakes, and 10 inch rims for the rear, removing the torsion bar trailing arm system. Run standard wall thickness ¾” gas pipe (1 inch od) underneath to the front to fit the radiator behind the grill.
At this point you could add a more effective heater and defroster also.
I expect the alternator capacity and regulator design will be an improvement too.
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Miata UBJ: ES-2074R('70s maz pickup)
Ford IFS
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360LA 442E: 134.5x46x15
Lotus7:115x39x7.25
Tiger Avon:114x40x13.3-12.6
Champion/Book:114x42x11
Gibbs/Haynes:122x42x14
VoDou:113x44x14
McSorley 442:122x46x14
Collins 241:127x46x12