Hey Dan,
I have a 46 that I put a 302 and a c4 tranny in and I was going to use my stock gauges but instead opted for the dolphin gauge set and dash insert. I used the mechanical speedo cable that came with my donor from the c4 and it worked fine. The temp and oil pressure gauges were no problem as well with engine. If you are using your stock gas tank and sending unit you will need to put a little voltage reducer at the sending unit to make it work properly with the 12v gauges.
Here is the site.
http://dolphingauges.com/ Charlie
BTW...I like you weren't afraid to hear the *****in about ford into chevy either.
ok...I just double checked and they do not offer a dash insert for a 35 but I will look at others and post again. But the gauges are nice and less expensive than other brands.
After thinking about it the gauge set and dash insert may have been the same for the cars and the trucks pre-39 trucks so just call them up and ask them if that is the case. They do carry the dash insert for a 35 car.