rear torsion bars 1987 carrera w/o turbo

[dgc2]

replacing rear torsion bar bushings on 1987 carrera. since all is now open, i am considering upgrading to a larger bar. the stock bar is 25mm with 46/47 splines inside /outside (part # 911 333 115/116 000). after reading many blogs on torsion bar upgrades i would step up to 25mm bars. although bigger bars are available, a 27mm bar for this year does not appear to exist. after talking with pelican, their references for a non-stock bar excludes the 1987 year.

if possible, does anyone know of a 27mm solid bar that fits the '87 non-turbo??

thanks