If anyone in the future is interested, i went with the 91864LA and the Flame-Thrower II. I needed to file the bracket slightly but got everything installed in about an hour. It started right up. I took it for a drive and it runs wonderfully. It has never run this well since I have had it. I have not checked the timing yet, since it runs so well, but will. The idle dropped to about 500, so I will need to adjust that.