361 Hop Up Options

No, I think you know what to do. It's a 361 cube engine. Being a "B" block, it has a slightly increased stroke. I would ignore it and proceed like it was a 340. Duster Don has a good idea as well. Good on the cheap performance without a doubt.
Take a comparo look below.

340cid................360cid............361cid
3.31 X 4.04.........3.58 X 4.00.....3.38 X 4.12

stroke
...338,"B"..................358 "LA"
..-331,"LA"...............-338"B"
..,007 more stroke......020 less stroke.......

see what I mean closer to a 340 in stroke?

bore
340cid.............360cid

412................ 412
404.................400

.008.................012......closer to a 340 again.

Just watch what our doing due to port size and valve size. Know what you have before you leap. It will act a little differently, but very similar.