So you're planning on using the original engine's flywheel and clutch ? Might be a bit small for the power the Y8 will produce. I've got a spare D16A8 flywheel from an 88 CRX. 190mm, 21 spline plate, on that model, but I'd have to check the OD's of the flywheel/ring gear to see if it'll match the D13c's. The 89's used a 200mm, 20 spline plate and the 90-91's a 212mm, also 20 spline.