SBC to Borg Warner T-4 tranny- flywheel ???

I have a BW T4 4 speed (3 speed + OD), new 9" clutch, pressure plate + throw out bearing w a SBC bolt pattern bellhousing. I am considering putting it in my 60 hardtop which was a manual three speed w OD car. I have everything except a flywheel . The trans uses a 9" clutch and pressure plate which I have new. But not much room in the BH for a larger clutch.
Any idea what a guy should ask for in a flywheel for at the parts counter to fit that pressure plate? I do not mess w many stick tranny's. If I do use it, It will go behind a very stock other than a Performer intake and Qjet 800 Cfm carbed 350 ci SBC w a 3:55 posi RE.
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If you're trying to achieve an overdrive gear, the T4 isn't the trans you want to use. It's 4th gear ratio is 1:1. You'd need a T5 to get an overdrive ratio in top gear. If you decide to pursue that option, look for an F body V8 T5, preferably WC.

Bob

Probably scrap it and keep the clutch,PP + bellhousng then. I am not dead set on a 5 speed or over drive. Just had it is all. A buddy needed some fast cash for meds so I helped him out by buying this "overdrive tranny" from him. oh well. He is doing better.