Oh dear God! 318 stroker

Hello I'm new here and this might be the end of me for even bringing this up but...... after a long search on the web I have not found what I'm looking for. I have a LA 318 that is sentimental to me so it is what it is. I am looking to stroke it 340-349 Cid. No more no less. I see a lot of stroker kits to get 390 but it's not what I'm looking for. I understand that this is a dumb thing to hash through but any help would be much appreciated!
For what it's worth . I currently have a 1973 318 with a 360 crankshaft in it. You have to have the mains turned down from 360 to 318/340 specs. I had the block punched .030 over so now the correct cubes are 350.96. I suggest you pay special attention to your pistons. Wrist pin location can be critical. DO NOT LET THEM TALK YOU INTO ZERO DECKING THE BLOCK!!!!!! That creates a whole nother problem.