The 58 combo will not fit without major mods... none of the engine mounts bolt in. 168 tooth flywheel means you have to convert to 12 volts. Bell housing lacks bell crank for the 3100 shifter. Clutch linkage doesn't fit... ugh!
Mate the 235 to the 216 flywheel/ bell housing. Use the 6v stomp starter (a must... the 216 flywheel has 139 teeth. Only mates to a 6v starter. Works great with a 12v system. The 58 flywheel has 168 teeth for a 12v starter only.) Then drill 2 holes in the timing cover for a 216 front mount. The unit will now bolt right on.. Modify the waterpump to clear the radiator and mount whatever tranny you want.
Little tricky figuring the geometry of the carb linkage. I had to use the linkage from the 216.
Take your time, don't get in a hurry and be careful.
