I posted before about the rx7 caliper bracket I found on a Japanese site. Since revolution brakes doesn't seem to be interested in delivering a brake kit, I'm looking for an alternative.   RX7 calipers are very expensive but I'm curious if they are the same as vr4 and 300zx calipers.  The mounting hole width appears to be the  the same based on my measurements of the vr4 calipers I have and comparing to this drawing for adapters https://www.aeu86.org/forum/Thread-HOWTO-Mazda-FC3S-4pot-

I've seen all the posts that mention running 20w-50 in passing but there seems to be some people that caution against it. I was pleased to find that my local parts chain sells vr1 because I know the added ZDDP is supposed to be good for older heads and valve trains, but I also know that the FSM doesn't have 20w-50 listed as a possibility. Does anyone have any experience running a 20w-50 or even vr1 specifically?

Hi there...  Last summer my dad gifted me his 1987 Starion ESI-R... He was the only owner before me..  He took really good care of this car.... really good care.  Unfortunately he got this bug to modify some things..that now were not such a good idea.  At one point the head gasket leaked so he replaced the gasket but wanted MORE POWER... so he put on a head with a racing cam... After that all kinds of problems.... Car would not idle correctly ect because computer does cannot be adjusted to cam. 

It's been 2 years since we closed our shop. Many people continued to ask me about parts  so Diane and I started Dads Engine Parts LLC  we went online today. link below. Dad Dads Engine Parts Llc.