something like this maybe was $150 for the crappy lynx manifold long long time ago $120 for the GSX-R TBodies plus shipping was under $100 from USA and $300 for the engineering if I had to pay for it, to space it out properly I believe they use a delfi style injector
these will be going up for sale later unless I decide to pinto the other car. It will be cheaper for you to DIY
They are 42mm at the head opening up to 50mm airbox side. They breath like 50s and have high velocity down low due to narrowing diameter.
They are made by mikuni
You can get them of gsx-r's 1300 down to the 600 all the same unit. 07 they changed the design so they are paired and dont lend themselves to modding easily at all. Mine were off 03-04 grsx-r 750. In all honesty you will spend just as much modifying these as you would just buying a set of jenvey's. Then you still need to find injectors, custom rams, custom airbox.
Will they work? hell yeah
Wouldn't you rather have something like this instead
these are the DTH version. yeah I know, Raceline had a problem with sending me the 30mm ram tubes I asked for in like 6 different emails and sent me some top quality pre-scratched-used 90mm ones instead.