Gimbal Bearing/Bellows kits Where 2 buy?

[Dodgerrr]

Hello everyone.
I decided to try and get the knocking sound eliminated from the out drive.
Specs:
1974 V20 Step Lift.
Inline 6 cyl GM 250 (I stole from the Massey combine)
MC-1 outdrive I think? It has the loop on the top of it. Pre Ahpha?

Question: Where is the best place to buy a kit from. I see them on Ebay for $65-89.00 dollars. Marine stores want between $125-175.00. Am I buying junk from ebay?
Here is the link.

http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWAX%3AIT

I can't believe how easy to remove the drive was....loads of grease. Only hard part was the bearing but it came easy with a slide hammer.
I have searched this site thoroughly and wasn't able to locate any post about "Where to buy" parts.

I am located in Niagara Falls.
Thanks all.
Dodgerrr