the oem replacement manifold upgrade we offer keeps everything in the stock location mate, so all stock components fits as-is with this upgrade...only the externally gated power up kit shifts the turbo.
there are very few here to begin with bro..definitely not a car you see on the road very often at all. ive seen a few that are in good condition. cars generally don't rust too bad here because its very warm and sunny all year round. but not too many kp60's in our country. cant believe you found some tools in your fender..those could be over 20 years old lol
we've used many sard regs over the years and they seem to do a good job. got one on my own car too. price is decent. watch out for fakes on ebay though.
adam is right..way too thick mate. we use 1mm on our race car. compression is a little higher than adam mentioned hehe..but certainly you dont need to go as high as 1.9mm's. 1.2-1.4 would be about the max.