If the cylinder is bypassing the piston seal, yes
Easy enough to test to determine where the problem is.
Extend the cylinders, pull the retract line, hit extend. No fluid should come out unless the seals are toast
TB IV uses a timing light and you set the motor to 6-8 degrees per the manual for your motor. No different than any generic distributor. No base timing mode. Just must be set at idle.
TB V needs to be put in base timing mode by grounding the purple/white wire, then adjust to what the manual...
Contact Raylar engineering as they are the 8.1 experts
Your ECM will need to be reprogrammed to go non-cat
There is a set of VP manifolds on ebay
https://www.ebay.com/itm/266994409012
since the top is not that large on the 212, I would probably mount them just outboard the pipework. two on port, two on starboard
or just forward the ebox and the forward legs under the front overhang of the hardtop