imo, I think the c6 is run best in a truggy. In a buggy I think it will just spin the tires up and cause to much tire wear. I have a grp tuned and also a rb s7 lg2. I love both of them. The grp gets alot better run time over the s7 and has more power top and bottom, but that I expected. But the s7 l2g is a engine you handle, it wont just light the tires up like the grp or c6. Remember faster isnt always better. Honestly, I havent got any better results as far as lap times with the grp over my old reliable s7