Hi maybe you could ask Harrop for some advice directly.
Try Matt, he has answered a few of my questions in the past.
Matthew Howarth | Performance Centre Advisor
Harrop Performance Products
96 Bell Street, Preston, Melbourne, Victoria, 3072, Australia
t: +61 3 9474 0900 | f: +61 3 9474 0999
e: matthew.howarth@harrop.com.au| w: www.harrop.com.au