The ‘special’ dual pattern bell housing is for a 6 bolt block only. My buddy bought one to use in his Tiger build but I’ve convinced him to go to a T5 and he is using the 5.0 liter bell so it’s taking up space in his garage now.
It has mounting holes to mount either a wide pattern or narrow pattern top loader. I haven’t measured the center hole but I would assume it’s for the slightly larger bearing retainer. I had to change the retainer to mate up my early top loader to a Lakewood bell which also has the dual pattern. I think it was about $50 from Dan Williams Toploaders. No other mod is needed to the trans…
Jim
B382000446