Should I get the timing belt kit that's advertised?
Do the tensioner and pulley need to be changed at the same time.

Any ideas on how to make this job easier?

You need:

1.belt
2.idler pulleys
3.maybe tensioner...if it retracts/works OK, you shouldn't need to replace it
4.cam hold down tools
5.service manual for timing procedure

Get the motor apart and check your current timing. The LQ1's love to get out of time because the cams aren't keyed. I've seen many that are so far out of time they have no power, but run fine.

Follow the timing procedure EXACTLY. And double check it with the service manual!!!

1.Start with the rear bank (nearest to the firewall).

2.Losen the front and rear cam sprockets (all 4 of them). Just loosen enough for them to spin, and no more. They should spin freely of the cams. This will aid in timing and make it easier to install the belt.

3.Install the new parts (belt, idlers, maybe tensioner).

4.Put the engine at #1 TDC. MAKE SURE THIS IS CORRECT! You can also use the timing marks on the dampner and block.

5.Install the cam hold down tool on the rear bank. Tighten it down good, make sure it's seated on the flats on the cams perfectly.

6.With the engine at #1 TDC, and the cam tool TIGHTENED, step torque the cam sprockets to spec (I think it's 81 ft lbs, so torque to 70 ft lbs, the go to 81 ft lbs). Remove the cam hold down tool.

7.Mark the rear cam sprockets now, to verify timing later.

8.Spin the engine clockwise (don't spin backwards!) one revolution...use the timing marks on the dampner and block.

9.Install the cam hold down tool on the front bank now. Once fully seated, tighten the cam sprockets to spec.

10.Put it back together...you're done.