There are different length push rods, but it may not help you,
2.5 S ones are longer, if you fit Vitesse ones to a 2.5 you end up with 150 thou gaps even at maximum adjustment, found that out when a mate asked me to look at his incredibly asthmatic Saloon. So 2.5 ones won't help.
Mk1 2000 ones may be slightly shorter than Mk2 2000 but are possibly a different size.