can anyone tell me where the heater hoses on my late 87 rangie go? have changed inlet manifold to one from early 87 as would not run on petrol(dual fuel).runs on petrol now but because ive done it over aperiod of time ive forgotten how they go.heater hoses are different on early and late 87s and seeing im rusty on working on v8s im totally lost.can someone put me on right track?