Rebuild or Replace 1999 4.6L SOHC
My 1999 GT Convertible had a tapping sound under the valve covers. I had a local shop on their recommendation replace all the hydraulic valve lash adjusters. I picked the car up today and now the tapping noise is coming from lower and deeper inside the block and gets much worse when driving. I took it to a different engine shop and they feel the crank, rod and/or bearing are about to go. They are recommending a rebuild with new crank, new bearings,valve grind gasket kit,lower overhaul gasket kit, springs, 1 piston, 1 connecting rod, new rings, honing, upper and lower bearings, timing chains, water pump, oil pump basically as I understand it and I'm a neophite is this considered a lower rebuild?
They are giving me a price of 4500. Should I consider a crate engine? The car has 90,000 miles and otherwise is in very good condition. Any advice on which direction to go?