[ERA Chas]

Yes the 3/4" bolts work with a windage tray and additional gasket. Didn't realize you may not have one. Using washers (even splits) defeats the purpose because the serrated head will hold the bolt to the washer but allow the washer to relax against the pan.

It is best to shorten the bolts. Run them through a die to get clean threads and let them bite the pan directly. It's a PIA because there are 22 of them (I think) but with a sharp hacksaw blade or a cutoff wheel it's really worth doing. Don't forget to start a nut on the threads before you cut to length, then remove the nut to chase the thread a little. Measure the thread depth carefully so they don't bottom.

Studs and Locktite won't work- did that for years. Just install 2 studs as guides for installing the pan. Put the studs away from the leaking area.