The indy that rebuilt my SE transmission has 126 wheels on his 300TE. All you need is a set of lug bolts for the appropriate 126. The wheels are either 6,5J15H2 ET21,5 or 7J15H2 ET25. If they're 6.5", get a set of bolts for a 91 300SE. If they're 7", get a set of bolts for an 86 560SEL. Lug bolts are not cheap new or used. From a fits perspective, the lug bolts are the same but lug bolts for 7" wheels will stick out more on the outside on 6.5" wheels. It's a cosmetic thing.