Hello
Hello sure you are right cheap power is asked here, very common in the US that Power is higher ranking then other qualitys.
Just like the 97 Darwin award winner shows.
Very simple just bolt in the 951 rearaxle/ trailing arm. Needs some brain but is very easy. Doubt that an KG rear Fender will match over 10". 8" will fit and 9" with some help. But TÜV will not like to see that.
sneak around in german car magazines like :
www.vw-speed.de
Grüsse