I'm not sure that's what I'd do.
Any 2F or 3F bellhousing will work. I like earlier vs later because you need to match the slave cylinder to the bellhousing you use. The earlier bellhousing allows you to use the earlier adjustable slave cylinder, which in my opinion is better. But all will work.
Assuming you buy a new shifter with your H55 (which I recommend), it seems to be geared for the 3F bell housing which rotates the transmission down about 9 degrees. With the earlier bell housing, the gear shift lever comes out close to you and the wiper control. You can bend it or just live with it. On balance, I like the adjustable slave of the 2F bell housing.
I agree. However, it is very easy to make an adapter to mount the early slave to the 3F bell housing. I would say just slightly more difficult than grinding the 2F housing to fit. Please note there was a change at some point in the H55F front bearing support housing and as such even the early 3F bell housings need to be ground down slightly to fit a new (or later model) H55F trans.
Dyno