Kim
I just finished installing the Mcloed modular on my 427 SO. I'm not sure if the 460's are the same , mine was part# 8740-03. With regard to the starter hole, my block plate was tapped for the blind hole, top-left hole when looking from the rear, 3/8" I believe. Initally, I threaded the bolt in from behind, like a stud sticking out the front, but decided that may be problem if the bolt backed out and fell down inside the housing. I ended up just installing it normally in the tapped hole. It held fine when I torqued the bolt. I also had to "notch" the bellhousing to get it to fit inside my Lonestar frame, (1/2" x 4") just up to the bottom starter hole. Had to remove one of the outer retaining bolts since the hole no longer existed. As far as ground clearance, I believe that I will have more than enough clearance since the bottom of the bellhousing is higher than both my front crossmember and
oil pan, but I haven't had the full weight of the car on the suspension yet to know what the actual clearance will be. I have some pictures in my gallery of the modifications but they are a little far away. If you want let me know and I can take a close-up and post it since I have remove my engine while I get the body ready for installation. Hope this helps. Good luck.
Brad