As usual, Dean's spot-on. The Hammer 300E conversion set owners back approx. $80k when they were made originally. AMG used a custom-built V-8 in those cars, which used AMG's own twin-cam, 4 valve heads. The hammers retained the 300E narrow body (no fender flares), albeit with ground effects all around, and a small wing on the trunk.
Extremely cool car I'll grant you, but I can't imagine the repair cost if you had a problem with the motor!
I'd also recommend the 500E/E500...wonderful car, and supported completely by your local MBZ dealer, or PartsShop!!
Best regards, Michael
'92 500E, Almandine Red, 17x8.5" AMG Sport rims
'88 300TE, Arctic White, 16x7.5" Mille Miglia E420/430 replica rims