With cam upgrades, every shop varies and you get what you pay for. When I bought my ve ss at 49000 on odo , it had receipts for cam upgrade but didn't say on invoice the valvesprings used, exact cam specs, or brand of parts used , other than cam upgrade with comp custom cam// all this was done by a previous owner and a perth workshop , in all will say '' MADDINGTON'' now closed, I purchased the car at a car dealer
Not long after ownership a valvespring broke-, upon further inspection, was discovered they were cheap single springs, still had std pushrods, and decided to pull the cam to see what it was and was a vcm 7 cam not a comp custom as on invoice!!
. No other damage than the spring, so swapped all the rubbish out with duals and manly pushrods, put the 7 cam back in abd retune and car hasn't missed a beat since. Ask the shop you intend to use, what they are putting in. Do it right the first time, rather tha n opt for cheapest deal , as can cost a bomb fixing another shops rubbish.
As for the walkinshaw cam, there will always be people who will just pay for the name and feel because its walkinshaw, its got to be the best.
I personally think the price is alittle excessive for what you get.