Dwane,
Have you done any serious comparison between the two kits, the Mr. Freeze and the Snow? It's a tough decision. I have been bulking up on everything I can and I'm leaning towards the Snow kit. Lots of support and A1 customer service also.
I guess I'm still on the fence. I guess what really interests me is that not only can you dial so much more timing in, but overall, it's just safer (charge temps)
The only thing I thought of was what if the pump malfunctioned on a run? The detonation demons can come quickly and destroy any motor without a lot of warning. I know there is a low fluid level and active pump light led on the Snow kit but I dunno??? What do you think?