i know im a pain but....
 

just wanted to double check that it if i found a backbox i wanted but had a 2.5 inch flange connection that it is fine to get that taken off and a 3inch flange welded on? and if so would this be the correct flange to get???

http://http://cgi.ebay.co.uk/ws/eBay...m=300303140787

answers asap pleeeeeeease.

thaaaaaanks

dave