Hi, I have a 98 wr400f and it was stolen a while back and actually recovered, but when I got it back it ran like crap, so I took it to my friend and he says its got a cracked vacuum release plate and it cost over $150 for the plate and seal. Seems like a lot for a little metal plate and seal, so I've been reading on here and it seems every one is going to the edelbrock and if I'm gonna shell out the money I might as well have the easy adjudtment and starting that if offers, now I know the 3148 will fit my bike but I cant seem to find one for under $400, so I searched ebay and came up with this one. Can anybody tell me if it will fit my bike? I have no idea what the mm intake and stuff are, no to tech savvy. Any help would be appreciated.