Just my 2 cents,but according to Patrick's,(in the "Links" section),they do not recommend hydraulic lifters,because,in their opinion,they haven't found any aftermarket sets,that would hold-up.I think they're talking everyday driving,not just performance applications.
http://www.patricksantiquecars.com/articles.html Their number is:1-(520)836-1104,during business hours. Here is their E-Mail address:
[email protected] Talk to either Patrick Dykes,or his son,Phillip,and they'll tell you the facts. I was going to buy a beehive remote oil filter,and the hose kit,but they talked me out of it!! They lost a sale,worth more than $250.00!! These guys are honest!! Hope this helps.