If it was me, I would throw the ported ones on, get the proper domes for cheap. Bolt it all up and forgetaboutit.
What's the rest of your setup? Pipes, timing, carbs ect...
Fuck yo couch Nucka!
http://m.ncix.com/products/sku/82723
Exact same one I use from ncix. Always goes on sale. Cheap and works great. HD video playback is crisp.
Extremely fast. 10x better then SanDisk.
Sent from my shed.
Thought I would finally give a review on this bad ass mount. Greaseable. Twice as big for much more support, which is nice for extended stems. Machined from delrin, not cheap plastic Yamaha junk. Thicker better orings to keep everything all sealed up. It's Rad! Sent from my shed.