xspsi6

iTrader: (31)

I got the hole drilled but I forgot what size to tap the bolt holes to so does anybody know off hand?

cartmill

iTrader: (3)

i would drill them to match whichever bolts you decide to use to bolt the flange to the pan.

Tabaka

iTrader: (8)

Club NA-T has a great thread on this. I'm not sure if I'm allowed to post the link or not, but check out the NA-T General Discussion area and you'll see the top sticky called "All about oil lines..."

I hope that helps.

Ali SC3

iTrader: (10)

If you are talking about the holes on the sides, then its either an m8 or m10 tap, i want to say m8 but its been a while. if you have both just see which one slips in better.

cbasoco

I used a 17/64 bit and an 8mm x 1.25 tap.

Vwpride12

An m8x1.25 would be a Lexus bolt with a 12mm head. M6x1.0 would be your regular 10mm flange bolt.