Old style petty strut for tall bar

[Wrightpayne]

I have an old style S3 imperial tall FIA bar for when my body protests to getting in and out with a cage. Hopefully a few years off yet!!

I purchased second hand but it didnt come with a petty strut. 

Merely to complete the set up (I wont be doing any sprinting!) I wondered if the struts were a special size for the tall bar or whether they were simply re-drilled at the sleeve?

FYI the petty strut comes in two parts that you bolt into the chassis and bar THEN drill the connecting sleeve. 

I guess I could do some simple / fag packet trigonometry to determine the increase length of the hypotenuse and whether the sleeve is long enough.

Anyone know? 

[Drumster]

when I changed to a tall FIA bar I don’t recall re-drilling the strut but I might have had to lengthen the hole a wee bit where the 2 parts bolt together