oh buddy, where are you?? theres nothing to a 12v and i love to tinker with them. got all sorts of timing tools and plates. as for shops, not much i would recomend in michigan. poole is great with them, theres probably some i dont know but around lansing area, its a no go. what are you looking to do to the ol girl?? i am always willing to help, if its easy :-laf i think a set of springs and a plate with wome timing would do it some goodOo.
matt