I might add that the AR5 in the Solstice (MA5 is a Colorado trans) has a slightly different gear spread with a 1.51 ratio for third. This makes the gear drops 40%/33%/34%/27%. Plus the AR5 is supposed to have a shotpeened 1st and 2nd gear.
Also, the Colorado MA5 has a different shifter setup than the Solstice AR5 and might be difficult to swap into the car. I looked at this once and wasn't able to figure it out for sure, but I think the MA5 shifter is right about where the crossmember is on the A-Body. (not the best location) while the AR5 is a divorced shifter (and might be too far back).
And the MA5 was considerably cheaper than the AR5 the last time I looked.
