Either will work nicely. I find I get better run times out of the 086 personally, and the 5 Ports do like that pipe (so do the 3 Ports & MG's).
Hey rcdude, I can't believe you had no bottom end with the 7 Port ?????????
I had run a 7 in my buggy for some time before I changed to the MG66, and it could be a handfull if the track wasn't up to it. Plenty of punch for a buggy with the 2072 pipe IMO, and the top end - well
I agree with Flanno totally - first choice for buggy is the MG66. Can't be beaten in this range of motors - smooth, powerful with top end that has to be experianced to be be realised, no kidding. Close behind is the GX-7R - sweet power band for a buggy with ballistic top end as well.
Unless you run real grippy tracks, the 5 Port is a bit of a handfull in the buggy, unless geared and clutched to quiten that stump pulling bottom end. Good in the winter months if your tracks get muddy. It has the extra bottom end to help carry the added weight build up during prolonged races in the soft conditions.
The 3 port is a sweet buggy motor on smaller tighter tracks. Lovely smooth power band, but just lacking a little in the top end on bigger tracks with long straights (unless you fit the MG66 modded crank and an 086 pipe - then it's quite nasty
)