Back in the early 90's I built a street performance engine with these pistons. I haven't been able to find the paperwork from the build, but JE 11.25 - 1 compression ratio sticks in my head for some reason. They measure (measured at the band between the top and middle ring) 84.328 mm or 3.320." across valve relief to valve relief, and 84.277 or 3.318" along the wrist pin. This tells us that they are pistons for over bore liners because stock 2L pistons are between 83.935mm to 83.965 or, 3.304" to 3.306" The numbers are on the exhaust reliefs which are visabbly offset. Can anyone help with the identification? Thanks!