I am going to bravos with. At the present time I use top mount starters.
To use bottom mount starters do I need to flip my flywheels 180*?
I have Gen V blocks. I don't know the internal vs external balancing stuff.
Thanks

you will need different flywheel,s.also need to know if engine is internal or externally balanced.

Just need to move ring gear to block side of flywheel. Machine shop can do it or you can do it yourself .

Bingo! Pulled one of the engines today. Flywheel is already machined to accept a ring gear on either side. This should be easy.
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yes they are all designed for engine side, few for rear, heat with large heating tip and switch right over

I've never removed a ring gear. Can you detail the process a bit more?

Use a blunt nose chisel or air chisel and work your way around ring gear evenly until removed. To install , make sure flywheel is clean of paint and rust. Clean inner surface of ring gear.
To make things easier , you can cool flywheel in freezer or ice down. Heat ring gear in household oven ( if not super clean , gear will smoke up house) or heat with torch. With gloves of course , drop ring gear in to position on flywheel. Make sure its fully seated and your done!!! Takes about 1/2hr total time to change ( less if already clean) Good luck!!

you should buy a lottery ticket today because you are a lucky guy,my #6 flywheels are only machined for rear mount starters.i would bet that someone machined yours prior to your getting them.

using a std size torch set with a big heating tip, heat all around the ring gear will fall off, flip flywheel over heat ring gear again lay place till drops into groove let cool

I agree. I assume they were front mount to begin with and someone machined them for rear mount.