98 4.6 InTech head gaskets

I bought a 98 lincoln continental for $1,000. at the time I thought i was getting a steal, the previous owner explained it ran great up until it blew a plug out the head threads and all. I have the Triton kit to fix this on the Ford 4.6 and 5.4 engines, and was able to drill the spark plug hole out and put an insert in. then, after fixing that, started the car and went for a test drive,... and out poured a looooot of white smoke after driving about 5 minutes. upon getting the car back and checking out what was going on, coolant was mixing with the oil big time, the dipstick was up way past full with coolant. So, just what should I know about before tearing the heads off this car, is there any special tool I need for the timing chains?