I got mine dialed in with pods and no collector, just some cheap emgo shorties I got of a parts bike. I have the 450 in my bike now as my 400 motor tanked because one of the oil channels was clogged and I didn't know it. You can get the jets for 2.00 ea and get a few different sizes to play with. I have the carbs from my 400 on the 450 and rejetted to 128 and it worked well. Runs well and revs smooth right to redline. Make sure you don't use liquid gasket when you put your sidecovers back on, the Previous owner did that on mine and some came off and plugged the oil channel and tanked one of my cylinders. I bought a complete gasket kit for 60.00 to get the side cover gaskets and others and it was worth it when I got the replacement engine. I am not sure what carbs your bike has but if you want pods and have no collector a +10 to the stock size on the main jet should have you running about right. POds and exhuast don;t change much at idle so the slow jet probably won't need to change. I had changed mine out at first and the bike wouldn;t idle at all, it was like 3000 rpm. Anyway, you can easily change out the jets with the carbs in place and a shorty screwdriver. Just drain the fuel bowls and pull them then the jets are right there. The best thing to do is do a sparkplug check. The Dans Motorcycle pages has a great run down how to. Google it, he has a lot of good advice. Good luck getting her running, and hopefully we have an early spring, I am already missing the riding and only stopped last week ;D
Cheers,
