Harland Sharp non-adjustable 1.7:1 roller rockers
 

Not sure where to find the non-adjustable 1.7:1 roller rockers Harland Sharp makes. I've searched and only come up with the adjustable ones. I've only seen the non-adjustable ones mentioned on this forum in older threads. Supposedly someone on this forum sells them. Boosted Tech used to sell them but their website seems to be down.

Scorpion racing make 1.6 and 1.7 non adjustable rockers and adjustable roller rockers for a 4.0l.