Estimate for Valve Job

what does all this mean? ...gasket set 135 spider assembly which contains the injectors 289 cylinder head, re man unit, 340 per side core is 150 per side and if they are cracked, no core return add about 150 in accessories oil, filter, coolant 40... are the 135 / 289 / etc additional dollar prices?

289 is additional, the spider is reccomended. Roy