Joel, The boat tracks perfectly I was running a 2" shorty with a half inch spacer with the SCX/SC combo, with the SCX-4 lower I am 2 1/2" shorter than the other combo and I am not running any spacers, I was worried about needing a half inch, but it worked perfectly...
As far as "Schucking" out the bucks, I honestly save money with the IMCO SCX-4 lol, it paid for itself after one season, like I said I was spending 10 to 13K a season on the MMW, thats 2 shop visits and a month of lost boating due to the blown up drive, I babied the drive didn't matter, I know everything breaks, but it got to be ridiculous, it's a shame that after 40hrs on the drive, I started leaving friends my keys and telling them to be ready for a phone call, I had enough when it let go 80 miles from the landing down in New Orleans, 4hrs later my dad pulled up in my truck and we loaded her up, I sent it to be repaired, I posted it on OSO for sale, been happy ever since...