i've got an 2001 targa a35 and a2010 st, the frames look the same but the carbs are different the airbox on the a35 allows more airflow.
i ordered a biturbo for the a55 it fell apart after a week of commuting 10 miles round trip to work. I was pissed off so i ordered a technigas but the biturbo replacement parts came in the mail before i got the technigas i put it back together and was pretty happy with how it ran. the technigas came in the mail and i just hung onto it and figured i would put it on this spring.\
Spring came around and the damn technigas didn't fit . it was nowhere close.
i eneded up coming across a steal of a deal on the targa and bought it well it turns out the technigas was meant for the a35 not the a55. it's pretty sweet how it worked out and believe it or not the a35 is faster than the a55.