Most any cam company can provide you with something that will work. But first, you have to know some pertinent info or you risk camshaft or lifter failure.
1) valve lift
2) hydraulic or solid lift cam
3) valve spring installed height
4) valve spring OD
These are the big questions they will ask you first, they also could ask additional questions regarding you cylinder head, like valve stem size(if retainers are also needed), etc... so be prepared to give detailed info to them. Without knowing this information, they cannot provide you with the best spring for your needs.
