Here's my current set-up with the ASP 52 engine. Weighs a similar amount to the old engine and is a tiny bit smaller. I'm under no illusion that it will be as powerful, but frankly the 32 was way too powerful for this 2wd car anyway.
The hex-ended steel secondary flywheel on the end of the engine allows the car to be directly stared with a power drill running in reverse. I made a dedicated socket for the drill incorporating a 1-way bearing. This means the 1-way comes off with the starter and the engine isn't running the bearing all the time, but I still don't need a starter box. You couldn't use any starter box on this configuration anyway. Or on this engine - way too hard to turn over.