Ok, Looks like this is turning into a build "type" thread. Meaning I doubt I'll boar you with the entire process, just the juicy bits. Make sense? Since I intend to build my Ultimate dual deploy the cardboard coupler from Loc just wasn't gonna make the cut. Not that there's anything wrong with it if used as intended (glued in). What I needed was a real av bay/coupler. First thing I did was grab the 4" av bay outta my Mac Pluto SLAM. Rats, close, but too big on the o.d., no fit. I called Mike @ Mac Performance Thursday afternoon and asked him if he could make me a coupler and bulkplate combo that would work with my existing sled, just need a smaller o.d. to fit my Loc tubing. I gave him the dimensions and I'm fairly certain he had it completed before we finished our conversation. He got it in the mail an hour after we spoke, it showed up this morning and you couldn't get a better fit if you tried. Thanks Mike.