"the Centa drive fits inside the original Bell housing"
I assume you don't mean actual bellhousing, but the elongated ali. casing that is bolted between the bellhousing and the back of the engine?
I'm not being pedantic, just making sure we are all able to identify the correct part. I was unaware that the Centa drive unit fitted inside the existing case, which is why there is more work to do, hence the extra charge.
