Hey, i've heard of the grand national, but since you guys brought it up, i was curious, especially with the supra comment so i looked up stock 1/4 times for the grand national (GNX).
Car-Stats.com Report for 1987 Buick Grand National (GNX)
Obtained from C&D April, 1987
0-60: 4.7 Transmission: Unknown
1/4 Mile: 13.5
Yeah, needless to say i was extremely impressed, why can't buick make cars like that anymore?