What grade of SS are you thinking about using? SS is not the panacea folks make it out to be.
Edit: beware of crap QC from Fastenal. The last bag of fasteners I got from them, 47% of the bolt heads were milled wrong and were +/- a half size.. Utter crap.
1970 SIIA 88, Sold
1996 Disco I, RIP