I Just purchased my first bogie tipper, just to cart a few extra loads of gravel etc as I am currently running a single axle and am needing something a bit bigger finally. I was always told if I got a bigger truck to get a CH Mack and one finally popped up. Just trying to find info on engines etc but there doesnt seem to be anythinf at all online, it has an EN7-400 engine and is the CHR788RS model. I see the 688RS as well and just wanted to know if anyone had any info good or bad and also the difference between them? Its a 1994 model gold bulldog elite with a quick release body and turntable also. Thanks for any info!