tell him that he needs to get right and leave it at that. I GUARENTEE your Z would Crush his mustang handling wise, and possibly at 1/4 mile, i dont know what mustang it is.
this thread reminds me of something i read once.
" The idea of a Datsun B210 and its 2,000-pound curb weight mated to an 85-horsepower engine leaves me strangely excited. To put that power into perspective, that engine/weight combination gave the B210 a power-to-weight ratio of 1 horsepower per 23.5 pounds, which was only slightly worse than the power-to-weight ratio of a V-6 powered Mustang II (1:22.1). Like the Mustang II, the B210 was rear wheel drive, which undoubtedly made it an absolute blast to drive in inclement weather. But unlike the Mustang II, even the hottest 85-horsepower B210 could exceed 25 mpg on the highway. If you ask me, the B210 even looked better than the Mustang II" from http://www.carlustblog.com/2010/04/car-lust-classicdatsun-b210.html
Now take a b210 and put a KA in it with a fatty turbo.... or better yet take your 210 with a KA and a fatty turbo.... that shits probably faster than the new mustang gt. that guy can suck ratsun.nets balls.