[ttmb]

I installed a HTOB (do I ever like it, too) last month when I put the SPF together, and used a 7/32 vacuum hose to line the edge of the hole. Split the hose lengthwise with a razor blade, & cut it just the right length so that it holds itself tight on the lip. You could use a little glue if you think it might come out, but mine fits tight enough that I don't think it will. An easier solution is to simply tie-wrap hoses around each of the flex lines where they contact the bellhousing. Lots of ways to skin this cat. The HTOB is the way to go. Just make sure the bleeder is on the top (don't ask), and that the clearance is set as per the instructions.