G'day bd.
Sorry mate, I read now it's only the BOLTS you want in SS. Is that correct?
The parts book list them all as studs but the Stainless Bits page
http://stainlessbits.com/link12.html list 4 of the 8 as bolts
#1 65-4182 stud 3/8 x 3-7/8" SSB list bolt
#7 42-4077 stud 7/16 x 4-1/4"
#8 27-5683 stud 3/8 x 4-1/8"
#13 65-4182 stud 3/8 x 3-7/8" SSB list bolt
#29 27-5690 stud 3/8 x 6-1/4" SSB list as bolt
#34 67-0350 stud 5/16 x 3-12"
#35 27-6276 stud 3/8 x 8"
#38 66-4163 stud 3/8 x 4-3/8" SSB list as bolt
Still think you could do the studs but weld/grind/polish the fixed nut end.
Like anything, if you can't find/buy it, make it.
Cheers