1983 Mazda Rx7 with a 88 13b under hood, bought for 1100 an about anther 200 into it, with more parts on order. Originality bought for the 13b to swap in to ... Show morea Miata plans have changed to building up the original 12a turboing it an putting a Rew throttle body on to it, an keeping the larger displacement 13b in the 7. The future holds a port job on both an over all rebuild of the 12a. Show Less