I am having a chip and 1.8 bar wastegate spring installed in my 1987tq. Has anyone experienced any headgasket leaks with the 1.8 spring? If all goes well, I plan on installing one in my 89 200 automatic, but I hear that something less should be used to avoid stressing the automatic transmission. Any wisdom on what maximum bar spring should be used with the automatic. George K. jkot@pitt.edu