So using tinmans weights we have
139bhp, weight average 1035kg, 134.5bhp/tonne.
So the it will be a very close race in a straight line and round a track im pretty sure that the 106bgti will be quicker than the mk2gti.  We also have to remeber that the mk2 is now 15 years old and the 106 is a next generation car ( safety mods, etc) so therefore the 106 will be hitting the scrap heap soon

Also we all know that the 8v will be far quicker than both becasue of its substantially better torque at lower revs and superior speedo accuracy

* mix puts away the catering sized poking stick