Aluminum Slant 6 engine

I completely understand his motivation. Its no different than building horsepower that you really dont need. Just a challenge.
As for the cost... I dont think its will cost anymore than a late model cheap econocar is good shape. And less to repair if it ever needs much.
I've owned at a dozen Neons my 1st gen got 30+mpg's,lasted over 400Kmiles(hard to believe) the rest good and a few mutts. i figure for bout 10k or less this can be done. changing motors on these are a breeze. i have a chance to get an Alum.motor6, wonder if its worth it? though i ve owned many 6's long time ago never really tuned them. they were so plentiful. easier to change motor.