griff851
Since writing that I scored yet another set of 748 bodies with stacks for $20. I have done the quick fit look and see with 851 stacks and there was no great drama. On the old set up I had a plastic spacer made up and used a cork seal to take up the rest of the gap to maintain stack length and get a good air seal the same as original set up. The only hassle is the 748 TB's bell mouth is wider and I don't think is going to fit inside my UNI filters (748TB's still in transit). All will be reviled in a couple of days.
Griff
