Newish member here

2 things if i could be pointed in the right direction i have a newer 360 magnum thats of course fuel injected and going to use a aem standalone to tune the motor on so i was looking at the vendors forums who would be good to go to to build me a motor thats gonna hold whatever hp i throw at it that knows what there doing at a reasonable price....and also the car is going to be a 5 speed manual who would i go to for that same concept thats its gonna hold up and be reasonably priced?