The 450 transmission is a 3-speed, the 500 a 4-speed. Maybe it will bolt up, but who knows? Even if it bolts to the engine, there will probably be driveshaft and linkage issues.

Exhaust manfolds are more likely to work, but again, no guarantees.

Have you tried a search?

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe