ARP rod bolts are a must before Head Studs. Better head gaskets are a must before Head Studs. Bigger turbo, bigger exhaust, ported head, higher boost etc etc are a needed before you have to think about upgrading head bolts/studs. The STOCK FORD (yes get them from the Dealer and not the parts store) head bolts are able to put up with a lot before they become a concern.
How about more insight about the head studs and why, instead of just a one sentence post.
But he's got a Duratec and not a Lima 2.3 so I'm betting your pissing up a rope as it appears he's not going to be doing the/a swap.
1994 2.3 XLT Turbo
Ranger Roller cam 2*R, T3, Gillis @ 20psi, 3in downpipe dynomax ultraflow, no cat, Large NPR, Turbo XS RFL BOV, LA2, Bob's big log header, Gutted/Rotated upper, Knifed lower, 65mm TB
'96 Expo 8.8, LS, Disk Brakes
245/45/17, Chrome SALEEN's
Getting over hauled!