JB weld, flex seal or full rebuild ?

About a grand.
Yep.
Springs, switch to 10 degree locks n retainers if solid roller. Price accordingly..180-300
Cam-300ish bucks
Roller lifters 300-1,000+
Crane coated steel gear for billet core 90.00

It can add up. I went through herbert cams and got a nice setup for less.