Heres the 50mm honda s2000 ones for reference
would just need injector bosses filled up

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  obx s2000 itb.jpg (62.00 KB)


  s2000 itb obx.jpg (60.04 KB)


  obx itb s2000.jpg (60.15 KB)

Yes, the S2000 ones are different, but the ones in the previous pictures are the same. They don't have injector bosses, just a piece that bolts on the front which adds injector bosses.

Not saying it's not a good price, just saying they are probably made by the same people...

they sure are made by obx problem with 1st lot is 48mm vs 50mm

I have to ask - what sort of rpm/horsepower are you chasing out of a ca18 that 45 dcoe webers aren't going to do the job?

Initially I was hoping for 180hp ate using hydro cams but now with 312 degree, 11.5mm lift cams solid lifters matching springs, 1997cc, bigger valves & light porting 210+ hp ate. Well see how the budget goes if I can sell another car to go all the way.

I could bore the 45s an extra 3mm but not cheap unless I can get my engine reco place to do the machining for good price then use hyundai or other 48mm butterfly. Yet wont idle well with race cams compared to efi & by the time I mod & tune carbs I could go cheap injection.