you could always switch to adjustable ones out of an earlier model they will make some noise but it will be normal. i don't know if a set of 3g lifters will fit. when i did my valve stem seals i went ahead and threw in a set of eBay lifters in. they would tick for a bit of time afterwards but eventually stopped. how loud is the tick? it could be that you are just running the wrong oil in it. try bringing the rpms up a bit say 1500 and see if it goes away. ive been using castrol gtx high mileage 10w30 in my truck and it has almost completely stopped leaking/consuming and does not tick. hope this helps out.