318 went off to the shop

Hey guys, time has officially come that the 318 was sent off to the engine shop. I posted a Cam question last month and found that my engine has a stock 340 cam. Im running the stock heads, which have been ported. Im not sure what is all going to have to be done with the engine but Im sure a minor boring. Im wondering since I have yet to find a set of 302 heads and only running stock is it worth upgrading to a x262 cam/lifter option that I keep reading so much about on here?

Here is my info

318, 727, 8.75 with 3.73 gears, TTI headers, Edelbrock performer intake, Edelbrock 600cfm carb.