If it is not modded, you will find your 2045 will choke it a little. That will be good for very tight or slippery tracks. The 053 is good but will drink the fuel. I found the JP-2 to be good on this engine with both the short and long header. The header that comes with that pipe is medium. A longer header will wake the bottom considerably.
Your fuel consumption will be good as well.
Hope this helps.....
TEX
