I asked this question awhile back about the A4MP motor program and never really got anybody to give me their thoughts. Here is a link http://www.alternative410motor.com/
Basically the project is/was headed by folks like Donny Schatz and Ron Shaver and is aimed at reducing the costs for teams to go 410 racing and be competitive on most tracks. The gist of the program from my understanding using a GM LSx based platform as the basis of the motor and restrict how it can be built using many off the shelf GM parts. I've been interested in the project being I have a little S10 pickup at home I have a LS1 stuffed under the hood of. The LS1 has a stock bottom end, with a small 224/224 cam on a 114 LSA with about .550 lift, and a set of mildly ported heads (TEA stage 1.5s) the little truck made about 400 rwhp. So I've seen just how well those motors run with just a tiny bit of work.
I've read all the news articles and such on the web but I have never seen anybody race on here locally, so I wonder two things.
1. Are the local tracks allowing these motors?
2. Are they as competitive as the folks on the websites leading you to believe?