street cam for 360 magnum

before i ask anymolre questions,let me give a little background on myself. im not "new" to cars,engines or anything mechanical.i am an ase certified tech for over 20 years and have owned and operated my own shop for the last 10 years. my first car was a 68 formula s 340 auto that i rebuilt in highschool shop class as indicated in one of my previous posts in this thread. i drove and raced this car through college. got married jumped on the 5.0l mustang bandwagon and parked the cuda. the cuda was stolen a year or so later and was never found.
i owned at least 10 different small block ford cars ranging from stock 14 second mustangs to high 9 second strokers that were all STREETABLE that I BUILT.
now back to the mopars. i know that rollers are a great high performance choice, but not the only choice. the cost of buying a roller cam and the appropriate hardware to match it is far greater than the same in a flat tappt cam. a regrind on a roller may bring the two to a closer match. to be sure im not the first person who has pondered on putting a flat in a magnum motor, and im sure it has been done if not because of initial cash outlay, but probably because some one had a pile of hoarded thru the years parts on his shelf in the garage and used them instead of buying more! no where in my posts did i say go fast using cheap stuff, but being cost conscious. im not going to spend a grand doing a cam swap. in a stock 87-95 5.0l ho ford its fairly common knowledge(in the ford world) how much cam can be stuffed in without worry of piston to valve issues. that number is around .540lift and 290 duration. to be sure that same knowledge exists with mopars. im not trying to set new records with this truck, jsut something to better compliment the other parts that are already there. this truck as originally built when magnum motors were brand new and NO hotrod parts were available! the owner waited a year for an intake from bouchillon and all that he could get was a single plane so he took it.
yes i know how to change springs, have done it many times. yes the springs will be replaced, their 18 years old. thanks for the posts they are appreciated mike t